Home / 12,135.64-18,203.56-3,815.46

Finding the Fourth Proportional to 12,135.64, 18,203.56 and 3,815.46

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Solution

The fourth proportional to 12,135.64, 18,203.56 and 3,815.46 is: 5,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.64 : 18,203.56 = 3,815.46 : x
  2. Step 2: Convert to fraction form
    12,135.64/18,203.56 = 3,815.46/x
  3. Step 3: Cross multiply
    12,135.64x = 18,203.56 × 3,815.46
  4. Step 4: Simplify right side
    12,135.64x = 69,454,955.04
  5. Step 5: Solve for x
    x = 69,454,955.04/12,135.64
  6. Step 6: Final answer
    x = 5,723.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.